When I check url like in your gist it also gives me just /products.
Actually there are two redirects maybe it causes problem. As I said there's login page where after login (using session) it redirects to other controller which check user role and redirects to appropriate page ( one of them is /products). And it duplicates them.
Added code to gist https://gist.github.com/tiix/a0dd611d0098fd03b2d9